If using a Microsoft product gives you a warm, safe feeling you may consider relying on Microsoft Security Essentials for antivirus protection. The independent labs give it good ratings, for the most ...

I’ve put the final version of Microsoft Security Essentials through its paces, and have found it a solid, simple-to-use anti-malware tool that takes up little RAM and system resources. Less clear, ...

Installing the free Microsoft Security Essentials will protect your system from malware—to a degree. But you'll get better protection from one of the other well-known free anti-malware products.